www.underclassblog.com — GravityBox is a module which primary goal is to provide the users of AOSP devices

with a tweak box to turn their vanilla AOSP ROM into custom ROM packed with additional features and tweaks
without need to flash anything. Most of the preferences can be changed on-the-fly without rebooting.

THIS VERSION IS FOR LOLLIPOP ROMs
For KitKat, use GravityBox [KK]
For JellyBean, use GravityBox [JB]

SHOULD NOT be used with custom ROMs like CM, AOSPA, RootBox, SlimBean and others - it makes no sense since the most of the features are already in the ROM (may cause conflicts and unexpected behaviour)